221400021142223 has 16 divisors (see below), whose sum is σ = 276031614303744. Its totient is φ = 172519235048160.

The previous prime is 221400021142163. The next prime is 221400021142241. The reversal of 221400021142223 is 322241120004122.

It is a happy number.

It is not a de Polignac number, because 221400021142223 - 2⁴² = 217001974631119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221400021142192 and 221400021142201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221400021142283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60455486 + ... + 64013012.

It is an arithmetic number, because the mean of its divisors is an integer number (17251975893984).

Almost surely, 2^{221400021142223} is an apocalyptic number.

221400021142223 is a deficient number, since it is larger than the sum of its proper divisors (54631593161521).

221400021142223 is a wasteful number, since it uses less digits than its factorization.

221400021142223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365782.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221400021142223 its reverse (322241120004122), we get a palindrome (543641141146345).

The spelling of 221400021142223 in words is "two hundred twenty-one trillion, four hundred billion, twenty-one million, one hundred forty-two thousand, two hundred twenty-three".